C O R P O R A T I O N
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20 New Dutch Lane, Fairfield, NJ 07004 973-575-4004 • Fax 973-575-4052 • http://www.heat-timer.com
Features:
• Built-in Outdoor Reset or Set Point
- That, combined with the PID sequencing makes the Mini-MOD the control of choice for a
variety of Hydronic applications.
• Minimum and Maximum System Temperature Adjustment
- Another safety feature that adds to boiler and system protection.
The Minimum Temperature should be set to manufacturer’s suggested minimum boiler temperature. When in Reset Mode, the
Maximum Temperature is to protect system components from excessive heat.
• Multiple Rotation Options
- The Mini-MOD will rotate boilers using a variety of options. Either based on Time; ranging from
1 hour to 60 days in one hour increments, Last-On rotation; allows for the first boiler to fire to be the first boiler to turn off, and
finally, manual rotation.
• Standby Boiler with Delay
- Now you can set individual boilers to be either continuously On, Off, or adjusted manually to a
specific modulation percent in addition to the Automatic option. In addition to the capability of Standby boiler, the Mini-MOD
includes an adjustable Standby Delay.
• Adjustable Pump Delay.
- Allows the System Pump an additional Run-On time to disburse residual heat in boilers.
• Normal and Parallel Modulation
- Depending on the types of boilers the Mini-MOD is to control, it allows for two modes
of modulation. Normal modulation will add boilers as more energy is needed. However, Parallel modulation will benefit high
turndown ratio and lower water content boilers.
• External Setback/Scheduling
- External Setback signal acceptance has been provided as an option for applications that are not to
follow a predetermined schedule. In addition, an adjustable Day/Night schedule has been provided primarily for building heating.
• Individual Boiler Modulation Adjustment
- Each Boiler controlled by the Mini-MOD has a set of configurable settings that
allows it to respond differently from the rest. A very beneficial feature when controlling different sizes or models of boilers.
• Domestic Hot Water Priority Option
- On a DHW Call the Mini-MOD will increase system temperature. Depending on the
Priority setting, the Mini-MOD will either dedicate all output to domestic hot water alone or in addition to heat (leaving system
pump running during DHW call).
• Featured Adjustments: ◦ Lag Delay
- Helpful in reducing lag boiler short cycling, it allows the lag boiler an adjustable period of
time before starting.
◦ Last Stage Hold
- A temperature add-on to the Set Point that is applied only to the lead boiler to
eliminate its short cycling. A helpful when one boiler at low fire is too large in light load conditions.
◦ Soft-Off Delay
- Providing an additional on period of time to boilers before turning off, this feature
help stabilize operation output.
◦ Purge Delay
- An adjustment to match boiler pre-purge for better control.
• Built-in Prove and Shutdown
- The Prove can be used to check the status of other equipment, such as the end switch on a
combustion air damper prior to firing the boilers. Furthermore, Shutdown can be activated from any safety control feed back.
• Security
- The Mini-MOD has an integral programming switch that can only be accessed when wiring cover has been unlocked
and removed.
Item Description
Part #
Mini-MOD
926710-00
Mini-Extension
926712-00
